Are you looking for

Senior Engineer

I focus on unclear ownership, brittle systems, and underused talent, and turn them into teams that ship.

15+

Years engineering

50k+

Websites powered

15x

Performance scaled

100+

Devs mentored

What I Offer.

Technical leadership that turns complexity into clarity. I combine deep architectural expertise with a proven track record of scaling high-performing engineering teams.

Team Scaling01

Engineering Leadership

I build, mentor, and scale engineering teams from scratch. By owning full-cycle recruitment, structured onboarding, and continuous mentorship, I cultivate teams that take deep ownership and deliver at an enterprise standard.

Alignment02

Predictable Delivery

I sit at the intersection of engineering and business strategy. By acting as the primary technical voice for product owners and global stakeholders, I turn ambiguous requirements into clear execution plans, keeping roadmaps realistic, teams unblocked, and delivery predictable.

System Design

High-Performance Architecture

I treat performance as a product requirement, not an afterthought. Whether it's profiling rendering bottlenecks, reducing critical-path payloads, or rearchitecting data flows, I drive measurable improvements, including 15x UI performance gains and 50% bundle reductions.

15x

Faster UI

-50%

Core Bundle

Career-Defining Fields.

The strongest parts of my resume are fields where product quality had immediate consequences: speed, revenue, consistency, or operational uptime. These are the domains that shaped my standards the most.

Real-time products inside 50k+ websites

Embedded Communication

I rewrote a core widget stack from jQuery to React, cut bundle size by 50%, and made embedded communication tools fast enough to feel native inside third-party products.

50k+ Websites-50% BundleReact Rewrite

Revenue-critical retail under load

Enterprise E-Commerce

I rebuilt critical UI paths on enterprise retail systems, driving 15x performance gains and making releases more predictable in high-traffic production environments.

15x PerformanceHigh TrafficPredictable Delivery

Content products across multiple surfaces

Multi-Platform Media

I worked on media products where consistency, speed, and architecture all mattered at once, helping ship experiences that stayed coherent across platforms and teams.

Cross-PlatformArchitecturePerformance

Fleet, EV charging, and operator software

Mobility & Industrial Ops

I improved state-heavy operational platforms tied to vehicles, chargers, and production environments, making complex workflows clearer and more reliable under real-world constraints.

Fleet + EVIndustrial SystemsReliability

Tech stack

My core is React and Next.js with TypeScript, production-hardened across high-traffic systems. On the backend I reach for Node.js, Laravel, and SQL or NoSQL databases depending on the constraints, with Firebase and Linux as regular tools in the environment.

For architecture I lean into distributed systems design, CI/CD, cloud-native patterns, microservices, and API design. I optimize for scalability and developer velocity, not just shipping features, but making the system easy to reason about and extend.

Having worked across the full-stack lifecycle, from raw architecture to final delivery, I keep the end user in focus at every layer. Good UX is an engineering discipline: fast, accessible, and intentional interfaces are a direct result of the decisions made deep in the system.

Beyond the code.

The engineers who move the fastest do not just code well, they share, teach, and build culture. Here's how I invest outside of direct delivery.

Maciej speaking at a conference
Public Speaking

Speaker at local events and conferences

I take the stage to share what I've learned from years of production engineering, from architecture decisions and performance deep-dives to engineering culture and team scaling. Speaking publicly sharpens thinking and keeps me connected to the broader community.

Maciej running a mentorship session
Mentorship & Workshops

1:1 and group mentoring, hands-on workshops

I invest time in the growth of others through structured 1:1 mentorship, group learning sessions, and hands-on technical workshops. From junior developers finding their footing to mid-level engineers stepping into technical leadership, I meet people where they are.

Internal Impact

Internal Initiatives

Proactive about internal projects and culture

I do not wait to be assigned impact. I initiate internal tooling projects, champion knowledge-sharing rituals, and drive company-wide retrospectives. Culture is built by the people who show up for it, and I consistently do.

Tasra Surf Paradise recommendation
Tasra Surf Paradise logo
Ambasador for Digital Nomads

A place I actively recommend

Extra initiative

Hotel In Marocco

Outside my core engineering work, I also put energy into initiatives I genuinely believe in. I am an ambassador for Tasra Surf Paradise and recommend it to digital nomads who want reliable internet, calm surroundings, and a healthier rhythm between focused work and recovery.

It is a good example of how I operate beyond a formal job description: I notice value early, take ownership, and help useful things reach the right people.

See my Tasra recommendation

How I work best.

These are the environments and setups where I tend to do my best work. They are not dealbreakers, just what makes the difference between good and great.

Location & Travel

Remote-first, globally reachable

Based near Szczecin, with both Szczecin and Berlin airports within easy reach, I can fly almost anywhere in Europe with minimal friction. Remote-first by default, happy to be on-site when it counts.

app.product.io
// clear, intentional APIs
useProduct({ id, lazy })
Product Focus

Product-centric, UX & DX obsessed

I'm drawn to products where the experience genuinely matters, where UX is measured, DX is a first-class concern, and engineering decisions are tied back to real user outcomes.

Deep work
Sync / standup
Code review
1:1 mentoring
Async review
Strategic planning
CET timezone
Work Style

Async-first, structured collaboration

I thrive in remote-first environments with strong async culture. Open to B2B or employment, within a few hours of CET, structured enough to enable deep work, connected enough to stay aligned.

Let's talk

Get in touch.

I'm open to tech lead and senior engineering roles. If you're building something ambitious and need someone who can lead from the front, reach out on LinkedIn.

Contact me on LinkedIn